As of Jan 2011 there were 442 nuclear power plant units in 30...

As of Jan 2011 there were 442 nuclear power plant units in 30 countries with an installed capacity of about 375 GW and 65 plants with an installed capacity of 63 GW in 16 countries under construction. (Interestingly, there are 55 reactors in Japan, most of which are still online).

Even assuming a very pessimistic scenario where 20 reactors around the world are abandoned because they were deemed "unsafe" that is still less than 5% of the existing number of reactors.

All other things being equal, these closures would have minimal impact on the spot price for uranium. Add in China to the mix and the fundamentals are still very sound.